The second triple-zero supermarket, which last month opened in Weymouth Gateway, is also water neutral, meaning 100 percent of its water demand will be met through water-efficient infrastructure and offsetting partnerships.

An onsite generator will provide all of the 81,700-square-foot Leicester store’s electricity and heating. The combined heat and power system will use natural gas from the national gas grid. Additionally, the equivalent amount of zero carbon biogas, required for the store each year, will be imported into the network from one of the supermarket’s Dairy Development Group farmer’s anaerobic digestion facilities in West Sussex, thus creating a closed loop.

Like all Sainsbury’s stores, none of its waste goes to landfill. Any surplus food is donated to local charities or made into animal feed, and when it’s not suitable for consumption it’s used to generate energy through anaerobic digestion. All general waste is recycled or turned into fuel.

Seventy percent of the water demand will come from rainwater harvesting and other water-efficient initiatives. The remaining 30 percent, which is potable water for food preparation, will be offset by sponsoring water saving initiatives at a partner site in the community. Additionally, 100 percent of the waste produced during the construction of the store has been reused or recycled.